Sorry, I understand the last mail, but I don't know why I can't get it. I did the following:
*select a label name *search the min (timestamp) for labels with the name selected *search the max (timestamp + elapsed time) for labels with the name selected *calculate the difference between max and min *calculate Throughput= (number of samples/ difference between max and min) * 1000 It works well when I have 1 sample, but doesn't work when the number of samples is greater than 1. With that code, for a label I have Throughput = 0.0999170557547; with Jmeter I have Throughput= 0.03220809002805324. I missed something? Please, any advice. Thanks, Jose -----Original Message----- From: sebb [mailto:[EMAIL PROTECTED] Sent: Martes, 18 de Noviembre de 2008 12:18 p.m. To: JMeter Users List Subject: Re: How calculate Throughput? On 18/11/2008, Jose Pablo Sarco <[EMAIL PROTECTED]> wrote: > Ok, but, how I can calculate the total time from the start of the first > sample to the end of the last sample with only the jtl file? I can't use the > timestamp because different requests are trigger between the start and the > end request that I'm calculating. > Why not? The JTL file will have the timestamp (default start-time) and elapsed time of each request. Just keep track of the minimum start-time and maximum end-time (start+elapsed) for each request you are interested in. At the end, take the difference. This is necessary since entries are not necessarily in exact order of start time - for example, if request 1 takes 2 seconds, and request 2 starts shortly after request 1 but only takes 1 second, then the sample for request 2 will appear in the log before request 1. > Regards, > > Jose > > > > > -----Original Message----- > From: sebb [mailto:[EMAIL PROTECTED] > Sent: Martes, 18 de Noviembre de 2008 11:26 a.m. > To: JMeter Users List > Subject: Re: How calculate Throughput? > > On 18/11/2008, Jose Pablo Sarco <[EMAIL PROTECTED]> wrote: > > Hi all, > > > > > > > > I'm using Jmeter 2.3.2 on XP. I'm trying to process the CSV file > > generated by Jmeter listeners, but I have some problems with Throughput > > calculation. I found some definitions like: > > > > > > > > *Throughput = Number of requests / Total time to issue the requests. > > > > *For a single request, the throughput depends only on the time to issue > > a single request. > > > > *For multiple requests, the throughput depends also on the gaps between > > the requests. E.g. if a request is issued every 30 seconds, the > > throughput will be 2/min, and is largely independent of the time each > > request takes. > > > > > > > > I understood the definition for a single request (1/elapsed), but I > > don't understand very well how calculate it when I have multiple > > requests, I tried with: samples number/samples elapsed > > (3/(elapsed1+elapsed2+elapsed3)), but the result is different to the > > Throughput displayed by the aggregate listener. > > > > > > > > Somebody know the formula to calculate the Throughput for multiple > > requests? > > > > *Throughput = Number of requests / Total time to issue the requests. > > The total time is measured from the start of the first sample to the > end of the last sample, which will generally be greater than the sum > of the individual times. > > The throughput measures the number of requests per unit of time, so > you have to measure the overall elapsed time. > > > > > > > > > Regards, > > > > > > > > Jose > > > > > > > > > > > ################################################################################################################# > > Este documento puede incluir información confidencial y propiedad de > Neoris y deberá ser leído solamente por la > > o las personas a quienes está dirigido. 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